Home head porting
I say go for it,I learned to port my own heads and its alot of work but it saves me several hundred bucks and I need to save where I can.It takes alot of time and you need to learn as much as you can about head flow,port sizing ect.Also it really helps to be able to get you hands on and in a lot of different heads such as aftermarket,ported ect-after a while you will be able to feel/see a good short turn nad a good port shape.Its not easy but it can be very rewarding,my heads are top notch and are professionally done and its nice to get all the power in exchange for my time instead of the cash.