Question about brake boosters

Will the booster from any other vehicle bolt in with no or little modification (and if some is required, what modifications)?

What I've been able to find here through searching hasn't made the answers clear.

My brake booster is shot. When I press on the brakes at idle, RPMs drop, and on the road, the pedal goes to the floor but the car does stop. Obviously nothing is available new anymore (carparts dot com let me buy one and waited 3-4 days to tell me it was out of stock). I'm scouring junkyards to find something before I send mine off to be rebuilt, since I'm guessing turnaround time would be long. One local yard has a '73 GTS and a '74 Ranchero, but I couldn't get either booster to hold any vacuum with the Mitivac (I tried it on a squarebody Chevy and it started to build a bit of vacuum, so I know the trick works).

Compton's 1973

but mind you the 1972 and an early 1973 build may be the same!

who's got a pic of a 1974+ ?

looks different than both my pics, swapping the later booster should be no problem though

I agree that there should be no issue swapping a later booster, but it might require some minor mods if the one stud is in a different spot.  Why would Ford change the stud positions?

Here is my '72:

Also, Rock Auto currently doesn't show a rebuild service for the 72, but does for 73 and up. But there are other places I can send it.

Check this page out for more info:

I paid $849 for a hydroboost conversion kit from Sweeting Performance out of Huntington Beach (powerbrakeservice dot net) in Mid-December with expected delivery in mid-January. I still haven't received it as of April 21. Early February, after a few emails and calls, they said things were moving forward. First week of March, I inquired again with multiple emails and a call, and was told one more week "give or take," and that my project would be their focus. Three weeks later, I emailed again (the phone never gets answered and the voicemail is almost always full, and in the outgoing message it says to email if it's full), and heard nothing back. Week four, I sent the old booster to Power Brake Exchange in LA/Santa Fe Springs, and got it back ready to go in less than a week ($130 plus shipping there and back). So week five (April 7), I asked for a refund and heard nothing back. Week 6, asked again, nothing. Week 7, checked on my card issuer's website, and it turns out that I've been too reasonable, to the point I can no longer pursue a chargeback.

At least the car is back on the road now with the vacuum booster, but I'm salty about my $849 and am seeing what options I have besides just posting on every car site I go to not to use that place.

Glad to hear you got a vacuum booster at least.

I've had my share of evil sellers too over decades of buying things, it is no joke, or fun.

I plan to install a 1999-04 Mustang V8 hydro boost system in my 73. I'll be doing my 92 Mark VII first, same parts too. The 99-04 GT cars all had it, common enough, those are disc/disc cars, the ABS is mounted behind the radiator, and I think the MC is easy to find in all parts stores. Don't bother with the 1995-98 models, those are unique enough that they are not ideal for swaps.

The PS pump is the one item to concentrate on for a hydro boost swap, various type PS pumps push more or less volume, and pressure.

TBH, I'd severely question the parts at this point. Maybe they will be solid good quality. Had to say without seeing first hand.