I vary my detailing on how into the real car the model represents I am. I make a decision on each model on the level of detail I will and what will be working or not. I am not anywhere near as obsessive as Bill, but do find myself trying to correct a model to reflect the 1:1. To me, form, fit and finish are primary. The amount of detail you add does nothing to correct those. Also, how one displays the model can also impact detail. If it won't be visible, do it if you want (you'll know) or let it slide. There also is a point where detail detracts. Try to do all the wiring and plumbing in an engine bay in 1/25 scale and you'll see what I mean. Sometimes you back off to stress the more important parts. But, do what you enjoy. I have a friend who, for years, would do the body mods and get it in primer and stop. That was the part of model building that most interested him. Eventually he did get a couple through to completion, but the design and fabrication are where he got his most enjoyment.
That's an older picture I got off a Fotki site. I would have to check the one I have in the stash, but it also was bought over 10 years ago. If interested, best to email Norm and check availability and price.
You buff first and then clear. BMF seems to oxidize or some other reaction if not cleared and you will always get some crud when you clean the model. It also does hide the transition and reduces the graininess from the adhesive. To my eye, BMF is a little too shiny for trim but the clear coat does reduce the shine a tad.
Revell (Aurora) coupes are parts kits to me, particularly for an unusual engine or use the rear suspension for a hot rod or custom. Interested in seeing how the Heller convertible compares to the Revell.
I have a 1970 Eldo down in the unbuilt stash in the basement. Looking at the photo, it is hard to tell if anything is missing, except the obvious of a taillight (which might be in the box). The only clear plastic is the windshield/backlight and the only red plastic is the taillights. The "heat" warpage (or whatever caused it) would be a no-go for me as a good amount of body work would be needed to correct. My Eldo is molded in orange.