i think it's time for a "while the engine is out of the DB4" list
i'm thinking , EFI , MAF, ITB's quad turbo, and a big ass intercooler
obviously you'll want to upgrade that tranny for the increased torque
and loose those skinnie wheels you got on there , perhaps Lindsey can convert the current ones to J11R17 3 piece wheels... no?
Q would approve.