I have an older RC18B and want to replace the buggy body with a truck one. Will the newer RC18T2 (part# 21432) be a drop in fit without having to make any adjustments or hole cuts? Should I use the old RC18T front and rear shock towers (part#21017) or do I need to pick up a set of the new RC18T2 shock towers (part#21339)? Thanks in advance.