I wanted some rocket buggies for my Orks but the current "old" buggy model looks terrible so i converted some out of Deffkoptas of which i now have many.
The rear axle is straight off the Trukk model, all my Trukks now only have 2 axles although i think they look better for it.
The front section is from the top of the deffkopta and the old Ork bike model.
I have played 4 games with my Orks now, 1 at 1000pts, 2 at 1250pts and finally 1 at 1500pts of which i have won 3 and lost 1.
I am finding my Orks do very well in the mid game but don't have the staying power to survive a long game, two of my wins would have been draws or losses had the game lasted an extra turn and my one loss would have been a win had it ended sooner.