Y-block trans. options

Well, here we go again with a simple question I probably have the answer for, just want several opinions.
I've been working the old '59 F-100 over, new brakes,(Complete) clutch, pressure plate, T.O.& pilot bearing,resurfaced f.w., tuneup, changed the rear gear, again, ( a wore out 292 will not pull itself with 275 rear gears, 3.25's work much better).
My 3 on the tree is very tired. Don't know why I didn't look at a 5-spd from the git go! If my calcs are correct, 3.25's in 4th would be pretty close to 3.50's in 5th. Best of both worlds!
Here is the question. What 5-spd will hold up the best under light duty conditions? What is the easiest trans to make fit? Will the mustang/S-10 trans do the job? Is there a 5-speed from some other ford p.u. that will adapt easily? I machined out an aluminum spacer for my '56 to adapt a S-10 5spd in it. Will I just copy that?
I see on Mr. Mummerts website he has modified bell housing. What trans goes with that?
I'm going to use this truck as a daily, 62 miles round trip to work on highway, (65 mph) conditions. I'm currently gathering the remaining parts to "hot rod" my 292. I'll just be camming it with "G" heads,
1:54 rockers and ram horn exhaust, nothing wild just a simple little junk yard built motor.
Sorry for all the stupid ass questions lately, I search and don't get the answers I'm looking for and get discouraged. Maybe one of the Y-block guys here can answer my questions.

Thanks in advance

Fenderless

 

I have a T-5 behind mine, it's out of a Turbo 4 cyl. '88 T-bird and works great. You can go for a V8 tranny for more money but I think for a daily driver the 4 cyl. one works fine. I have 3.50 gears and cruise very comfortably at 70 mph and 2500 rpm on 26" tires. I did my own mods to the bell and if you have a three speed now you already have the right one to work with. I don't do it all the time but this tranny holds up to some good burn outs and hauls my camper around too.

http://www.youtube.com/watch?v=28gtzOJdHqg

 

Mummert's kit are for a 1983-1993 Mustang V8 trans. The trans are as follows from worst to best

1983-1984 non World class 2.95 first gear 265 ft lb rating
1985-1989 World class 3.35 first gear 265 ft lb rating
1990-1993 World class 3.35 first gear strengthened gears 300 ft lb rating
1993 Cobra trans 3.35 first gear front tapered output bearing and steel front bearing retainer 310 ft lb rating
Ford Racing Parts M-7003-Z, known as the T5-Z. 2.95 first gear was rated initiially at 330 ft lbs but now shows as 300 ft lbs on Ford Racing site. Strongest regular t5 unless you go to a custom aftermarket unit.