i started one but never finished. dont use the kit decajs just paint the markings on instead.
for the engines, they look like well worn J79s. I use a ton of eye makeup on my engines now, over a flat or semigloss base of steel or aluminum washed with blue.
I would also replace both bridles with wrapped coiled wire. There is a bead jewelry making tool called a Coiling Gizmo that makes super fine super tight coils as long as you want. Makes your modling life easier!!