ProComp/Speedmaster aluminum heads
I had a shop build my motor to suit as I watched pretty much every step.(since I've changed out the heads the cam the lifters the Rockers and every bit of tin and the original rebuild came without tin or oil pump..) I had a shop do my alignment and I've had shops Mount and balance my tires. I had a shop weld the ends on my Dana 60 and another shop set up the gears. Also I had the shop or a couple guys come out and put in my windshield.
Pretty much all of which kills me I wasn't able to do myself...