rb20swap help

ok i have read and read about this
some say i can use the stoch ka cross member
some say i need r31 cross member
and some say z31 cross member
what is true and what is not
i am a metal fabricator myself and could probally make mounts to fit the ka
what i need to know is how far back in relation to ka mounts do it have to be for the rb?
if i get this i can make sets real cheep for others also
and will the z31 cross member work and fit the 240 no problem?
thanks
mike

i personally know people who have used the r32 member… the motor sits a bit high but other wise fine… and fortuneatly the rb20 doesn’t use a fat ass drive shaft like the rb25 so it goes in without making a custom one… and in the case of the guy i knew… his exhaust even lined up without issue
you also need to by pass the hicas ps lines on the pump or maybe you can use some other pump, my buddy just looped it lol… but if you make rb mounts keep ppl posted i’m shure someone would want some