I don't know of any 5.0 that you could get with the original Goodyear Eagle 225/60 VR15's. They only last about 20xxx miles on average.
No problems with quality stock sized radials, you can go 245 easy. I haven't included a tune up budget, so I've left out those prices. That stuff is routine maintanence. If your Integra needs the DR's then it needs them. The Stang doesn't (although it would benefit).
Hehehe, now my personal budget build.
1987 LX Hatch, 4 banger. $800
Medium riser 427 dual quad. free
Borg warner T-10. free
8.8" rear $200
3.73's $200
everything else, what maybe $2k?
Hehe, total $3200?