If you can make your own diesel head it is a lot of fun to dieselize anything just for kicks. I even did a baffle piston Enya .19 for the hell of it and it is a nice engine. If you have to pay $50 for someone to make a head for a $20 engine it might not be worth it. Would still be cool with those exhaust stacks, though. I have the .07 and .11 Gilberts in my collection. Mediocre performance as a glow. Piston port induction simply isn't as efficient as rotary valve.

Max