Mazda Offset and IRS Question

I am going to be putting a 87 rx7 IRS in my 87 mazda b2200...

so i need to shorten the rear at all?

what offset wheels should I be running?

I have an rx-7 rear suspension under my 88 B2200. I made no modifications to the width of the rear suspension. I will say that you will rely slightly on the camber of the rear suspension when layed out to tuck the tires. I used a typical FWD offset. I have 18x7 inch boyds under mine with a 5.25 inch offset, which is the biggest offset boyd offered for a 7 inch wheel. I have a 5 lug swap from no limit custome for the front, so the whole truck is 5x 4.5 bolt pattern.

you got a link for that no limits customs site??

what bolt pattern is the 87 5 lug rx7??

thanks man!!

5x4.5

John Yoakum does redrills on here and does awesome work at a good price. He is laynrockers on here. He did my hubs and a bunch of other peoples on here. You might hit him up if you're looking for a redrill.

you guys and your inches....

im gonna go out on a limb and say that bolt pattern is a 5x114.3

as for the offset what do I need... 35mm? 50mm?

I am thinking im going to get the front re-drilled to match the rx7 rear.

5x4.5=5x114.3 and you probly need to run atleast a 40-45mm offset it also depends what size rim and how wide also.

I'll most likely be running 18's to start... possibly an 18/20 combo at a later time.

Keep i mind there are two different RX7 IRS, one is out of the turbo RX7s and the bolt pattern is 5 x 4.5 like Cris said. But there is also a non turbo rearend that is 4 x 114.5, same as a big Honda bolt pattern. I've had both, so I can speak from hands on experience. Keep in mind that I'm assuming your talking about 2nd gen RX7s, those are what everyone uses. The 1st and 3rd gens are completely different.

well its an 87 rx7 with a 5lug... so it is 5x114.5 is it not?