you should be a little more specific. the t3 20g means you have a hahn 20g with 10cm t3 exhaust. those only work in kit form. the kit includes a manifold spacer with extended studs. a t3/mitsu manifold adapter with studs. and an 02 housing that mate the outlet to a dsm downpipe.
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want a piece of the yellow car? (buy it)
you have to beat the blue car first
and then you have to take on the IV
my favorite quote
"if the solution is simple, God is answering"