RE: .28 in a funfactor? oh dear....
I plan on installing an Ofna Hyper .21- 8 port into my MT2. There are two ways in which I have seen the exhausts installed with big blocks in a MT2. One simply used a straight pipe going out the back of the truck and used only the big block "U" header. The other one combined a big block exhaust "U" and a modified MT2 header "U" joined with a silicone coupler to form a "S". These, however had to use a smaller pipe to clear the tires.