Originally Posted by MD Cos
is there a reason for choosing the 2wd head mark? i was under the impression it was prone to cracking because of the chamber design? not a dig or anything, just curious as i was going to sell my 2wd head for a 4x4, but if it's okay for big power, i may aswell keep it!

I have used both types of head and found no diff in power or reliablity.
Mark