Nah Marko. The 5's and all the pipe work will go on a shelf in the garage all wrapped up. The condition is that this precision must beat the -5's in all areas!
Jez matched the -7's with a 6262, you'd think I can match -5'a with the next size up.
Also, spoken to Yavuz about engineering it AND passing emissions. That was another 'condition'. Both he said would be no problem.