when i put the 428 in the 69 the first time , it went in complete water pump to scatter shield , both fpa s on and it slid right in . This time i will try it with the tremec attached , i have made my changes on the motor and it s ready , the new tremec is still in the box . I am going to trim my shock towers , similar to boss nine and put a new suspension on , then drop the whole enchilada in .. then crown n coke for sure .. Bud