in the next couple of months i am planning on purchasing the U-Can-Do 3D 60 size and am going to install an OS FS91 Surpass II (my first 4 Stroke engine). Well from what i have been reading on the U-Can-Do it requires the engine to be inverted and I also have herd that 4 Strokes dont idol to well inverted so I am looking for a simple and easy to build ignition system to install in it. Thanx Guys for any info on this matter.