I'm in the middle of mine now. I got the kit on ebay, and just happened to not notice that it had no trunk lid...I had to scratchbuild that...yuk! I've been kinda blending all the different versions. I dug up some more beefy tires, and mounted the moon hubs on them...with whitewall painted. The body I painted Tamiya's Gunmetal. Its such an awesome deep metalic color...almost like sparkle black. (a lead sled - so to speak) I used bare-metal foil on all the trim, including the printed mercury badges on the nose. Right now, the body is drying from its 2nd coat of gloss. Then engine is all monochrome (black silver) I wired all the sparkplugs in the 440 to a distributor from a detail kit. Oil dipstick...good idea! I hear about those sometimes, and I always forget to put them in.
So, I've not started the interior yet...another adventure!
Good luck...post pictures if you can!
-jonathan