There are several threads online recommending changing the motor mounta, Didnt say you absolutely had too- the motor itself is $3799 so with $300 in injectors plus all the other stuff u said u did i think u may be low balling yourself. Thats 4099 with out your mods. Im jealous as heck though- just didnt seem to add up for me so i chose the atk replacement engine..it runs great
For my atk replacement i was 2500 for the motor with a $500 core plus i had toget a new header, bolts, sensors, so i was around $3000 without the tranny and clutch stuff..
Plus i have 3.07 gears--for now---so the golen woulda destroyed my rear end in no time lol