Big Bill
Rock Crawler
Beautiful truck, I have joined body halves like that myself. Only thing I did was paint the body first then cut and join. I used E6000 and product like ShoeGoo only better, then I used Drywall mesh tape as a backer. It held up great on an FJ-40 that saw alot of use. I got the body used and already painted, and thought it might not attach well but it worked great."thumbsup"That's exactly what I'm doing. the width of the backer piece varies though, depending on available space. All I've done is shorten bodies, and I've used pieces of the cut out pieces for said backers.
I use the tape on the outside to hold the pieces together, and then use those spring clamps (when I can) to hold the pieces down, it helps take out air bubbles between the pieces, which (in my mind) make for a better bond.
-Derek