I have 1-7/8 TTi's. Everything I read said that W2's liked to breath and most guys who ran them said they saw gains in the 1-7/8"s.

You will want to run a smaller spark plug so your socket can clear the header flange.

I needed motor mount shims http://www.engine-swaps.com/Pages/ProductsYear/67.72aBody.html to help clear a torsion bar

Your starter wires will be close to pipes, so you plan on some insulation

I run a 106 LSA Comp Cams roller cam and only have 10" of vacuum at idle (I hadn't planned on fuel injection) compression is 10.4 to 1. Hot Rod had a cam comparison article that actually showed how LSA difference's effect performance in June of 2017.


Do you run power brakes? The wider LSAand higher vacuum will help there if so.