rebuilding/freshening 87 T-type motor to be put in 85 GN. Should I change the stock cam and if so to what and what brand? Thinking of cleaning up the heads w/ some mild porting any advice or suggestions? New rings and possibly pistons any advice? The car will be a street car just looking for a little bit more performabce would like to have a reliable low 13 to mid 12 second car not really wanting to go w/ a high stall in trans but would be willing to install a shift improver kit in trans ...give me some ideas I will appreciate it thanks. What about a chip? Any suggestions?