The only cars with MT75's are 2.9's and 2.0 DOHC.. Everything else should have a type 9.
EFI Pinto's make good money, lesser carbed pintos are very simple engines making them easy to rebuild with tons of parts. But they are not particularly refined.
Twincams are BIG and can be expensinve to rebuild, they tend to kill head gaskets adn sometimes crack the head.
CVH's are quite refined compact units, cheap on parts ( especialy the 1.6 )
Or go for a V6 like me
DRUMS/VS/DISKS..... I have 10" Drums. I woudl not bother with disks as the handbrake mechanism is more trouble than it's worth.
TT