You can run the buggy BigBore's but your gonna need to be running CVDs with them.
You may need to shave the inside of the upper arms if your running RPM arms and if they rub.
Your gonna need either FLM or UE towers and some aluminum bulks to run a 4 shock buggy set up, your RPM towers have to much flex to be used with two shocks per tower.
Get the shocks here.
http://www.rcdeal.com/modules/stores/storeitem.php?item=14269
For shock stand offs use Ofna #41010.