I am pulling a 1066. 466, ported polished, roller cam, big pump injectors and turbo. Make sure to set your timing to 20 degrees BTDC. If you want you can install a electric fuel pump between the tank and the fuel filter to help with fuel flow issues, I have installed twin carter pumps to fuel mine, one from the normal fuel outlet in the tank and the other in the fuel drain, I have plumbed them together by drilling out the fuel bleed screw in the pprimary fuel filter and feeding the 2nd pump into it. I got my injectors and a 13mm pump. from Roger at Diesel Injection Service in Sun Prarie Wisconsin. He has helped me with power issues quite a bit. If you are still running the Air Research T-04 get a Garret 3-LM 466 to replace itpart # 193876. Should be able to get one under $425. The 3-LM really wakes up the 400 series binder engine. You should not have mutch trouble with any Deere that is running as stock as you are. Just remember, It often gets down to whoever spends the most money wins the most. If you need any more info send a PM and I will give you my ph#.