ooooo this will be good! in the actual crossovers I think Sunstreaker and Sideswipe were Vamps...just food for thought
don't give up on this guy as he has so much potential so far. try cutting down some of the pieces/body panels of the vamp even more to try to even out the proportions. also,when i did the xover prime/hiss tank awhile back,i found that small legos work well in holding panels/seams together. there's also alot of bayverse deluxe bots that pretty much transform like paper origami folding,so they have oodles of hinges/small joints you can salvage from junker bots of them.
I love anything Joe/TF crossover related.You could redo him as hound.If you can find hinges small enough,you could almost have him change just like his alt. Version. For roadbuster,i'd say maybe a wolverine or Havok.Something smallish but with heavy firepower.
