I just got my new streetport 12a in my samurai and I have a holley 450 on with 68 jets and it needs more air thinking of putting on my 600 holley but would like to here what everyone runs I have a real big streetport directfire headrer with real long primaries 2.5"exaust with a magnaflow so tell me what you got

 

I ran a 48IDA Weber. Works great with about 40mm venturis. I did run 43's at one stage and the top end was insane. Bit doughy below 4500-5000rpm though.

 

48dco-sp, 42mm venturis.

 

48 IDA

 

625 cfm AFB