Yeah I remember the engine. Customer wanted 800 hp but needed to use those heads for a reason. He could've made more power with less investment by using a different head but that wasn't in the cards. Looks like you managed to work around the constraints and deliver what the customer needed. Looks like you also learned a few things in the process.

I think we can say the power limit for TF heads is around 800 NA. They make 750 easy as pie but that last 50 hp is the killer!