Ok i have a 27 fever its a 95 before he raised the x dim....it runnin over 80 top 3 water holes are plugged on each side......would i be better to switch to a standard lenght imco or sporty...or a shorter on ect....any info is appreciated

Don't bother switching to a standard length Imco or Sportmaster, you will most likely loose speed!

For example: With my 92mph 28 Pantera with prop shaft 3-1/2" below bottom I lost at least 5mph with an Imco lower.

A shorty might gain some mph though!