Thanks for the good advise, Motoxpro, I'm still planning on using my BJ4WE for as long as I can. I'm going to modify the front end slightly to accept the B44 parts, since the front end is the portion that tends to break the most (surprise, surprise
)
It involves cutting the front hinge area of the front bulkead. But this would be a permanent change. Also, I'm replacing the CVDs with B44's CVAs, front B44 castors, B44 steering knuckles (which are super beefy, I managed to shatter one of Losi's which was very surprising)...
I think once the front end is modified, rest of the parts aren't too critical. The rear shock tower is usually protected by the wing, and the chassis and the braces aren't likely to break unless you REALLY get into a nasty crash