Do I need an aftermarket trailing arm crossmember??

[lil_sahara450r]

hey guys,
This is my first thread so dont bash me too hard lol. Ive used the heck out of the search function and couldnt really find a good answer.

I am building the rear of my 66 SWB and this will be my set up: I have installed the CPP c-notches, dominator 2600 air bags in place of the coils, ECE shock relocators, ECE super tracbar, and 2" drop blocks.

My quesions are: will i need an aftermarket trailing arm crossmember? such as the ECE or CPP units? the idea of having exhaust openings is nice, but will i have driveline interference issues? and the salesmen i spoke to at CPP metioned that it will also correct my pinion angle. I am assuming by raising the mounting position of the trailing arms upwards?

Any insight on this would be greatly appreciated guys, y'all have been a MAJOR help in the past several months (not to my wallet tho ). I usually dont post threads though, as 99% of the time the search function answers all my questions. if there is already a thread on this please point me in the right direction. Thank you!

And also, what shocks are you guys running with this set up??