you should be able to get a front only conversion for pbs.
for serious bashing i'ld get a pbs pro. or a pbs pro. they have all the heavy duty stuff in them. if you got a TQ on its way i'ld upgrade what you break.
i think that the pbs is better for serious bashing ( big jumps and big crashes) but it comes down to how hard you hit stuff/ land. if your bashing that hard you break cnc towers you might be better of with standard and letting them bend all the time (and not break tabs of diff housings), etc etc.
talk to rob at nitrohouse he'll help you out. tell him exactly what you want to do and he'll tell you what you should get. Also you should check out the ofna forum go to
www.ofna.com and follow the links. The link for the forun is on the bottom on the right hand side banner.
p.s. nitrohouse dosen't list everything they have so if your chasing something not on the site contact them direct.