The kit would have to be buildable as both standard configuration in addition to the custom parts. Extra parts are good.
Tim
I agree, extra parts are great to have. It's nice to have options. Revell is good at that with their Peterbilt series...
AMT did a custom Pete 352 which they called the "Turnpiker" way back. That kit was a little over the top but had some interesting parts in it. Wide Flotation tires, full rear fenders, a huge front bumper and some other goodies. We could even include the Tyrone Malone trucks for that matter.
What I'd like to get my hands on is a kit that has parts that are used by real 1:1 custom trucks today. Or could we at least get some custom upgrade packs for some of the more popular models? Revell has whitewall tire and slick packs for cars, there were some engine kits some years back too. Man if Round 2 got to releasing cutomizing packs for their re-released truck kits they'd even have more of a hit on their hands 'cause some people would buy the basic truck kit twice for a stock and a modified with the pack!
Why not put the extra parts in the basic kits too? I'd pay for some extra air filters and snorkels, custom sun visors, molded look rear fenders, a fifth wheel cover, new design wheels, lowered suspensions, steerable front axles, texas style bumpers, rear light panels, trailer connector boxes, frame cover panels, moon hub caps, custom grills... Include photoetch stuff too... You name it!
But stuff we see today, not 40 years ago. That could be done to update older trucks. It would renew my interest in these kits even more. There is money sitting there. I know I can buy some of that stuff from cottage suppliers like KFS, P&P, AITM and others. Buit those "packs" or full custom kits would also reach other customers than the core truck modelers too. Think about it!