Need some help here guys, I'm going to go for glasspacks on my 4.3. What length should I get? 28" or 45"? Is the stock exhaust diameter on a Blazer X 2.5" or 2.25"? Is there any way I can split into duals somewhere near the back? Can a shop do that custom? Should I remove my cat or will I lose too much backpressure? Any suggestions on tips? Thanks for all the help guys!