Nope not spending another 175.00 at this point. These heads are so space limited anything over a 2.05 valve is pissing in the wind for the small valve upsizing results. I’m already probably hurting my flow numbers using a 4.015 sized head adapter on my flowbench. And I’m not wasting the money to upgrade that. Lol. This engine should still run low 6’s in the 1/8 and 9.50’s-9.60’s in the 1/4.
