Spensley the 90 into the TB is 3.5" and reduces to 3" for the addition of the piping. If you are looking to go in to the grille area I would suggest 45 bends and twist them towards the front. We initially had a 45 in place of the 90 and it did just that, put the tube more towards the front then the side and resulted in an odd bend for where our filter is placed.

If you are interested in the 45's we have them for $20.00 each, 90's are $28.00 and are the long leg version (5X7"). Straight pipes go for $17.00.

The elbows are for sale on our website.

As for the Inconel, we do not carry that, mostly just Intake material at this time.