I have a 84 Notchback & want a little more pep out the 6 banger.I'm thinking duals with a nicer cam shaft & shaving the heads just a bit to raise compression. Also will the rotors & calibers from a SVO fit on standard 4 lug spindles.
I'm not sure if you'll be able to find much help on the 6-cylinder on these forums but what you've noted is probably a good start (3.3L?) The SVO rotors are 5-lug - there is plenty of info about a 5-lug swap on this site and over at turboford.org.