now japanese apa macam boleh, since we (malaysian look east), Japanese learn "boleh" olso lor.
our style of welding maybe susah sikit. but with right tools (TIG weld) & right engineering it can be done. (look at kit car specialist in UK, chez republic from the maganzins, you be surprise by how-to-built-your kit car). the points of welds, i suppose will be essential.
remember, the process of car manufacturing do get better in time but there was a time when "hand built" cars were of equal sturdiness. (maybe now with some CAD simulations, thus less crumple zones but i sure car can still rockets then!!)
what is most important, i guess is the chassis platform. structural strength can be enhanced from there.
I have browsed a hardcover book (porsche repairs) in kinikuniya (KLCC) that show how they "join" back 2 half cuts (911) for specialize track car. (yeah, dont think only its done only in malaysia but overseas also ada) .
it show "how-to" & ............ wait, BLaCkHoWLiNG, considering a Rabbit Pagani Zonda SUpra?? heheeh