If all what I said is true, the t3/t67 pushes more efficient boost, and mates with l series engine nice, it seems like a very good choice and possible to make 500+whp.
I know timz uses the gt42, my theory is that the t3/t67 might spool alittle faster.
Another plus would be... You could probably use the stock exhaust manifold and msa downpipe, would just have to increase the intake size. Making it practically "bolt in".