I made a few of these 200% sized v-twins out of PETG. I really like this lime green one, it is HOT!
Prime Time Lime
I did need to add a piece of material accross the piston arms (right in the vertex of the V they make) to hold them in place enough to print. Otherwise they bounced around and once the piston arms got too long they would start to collide with the nozzle. I just did that in the slicer software.