I've fitted both Eurosport and GL (TI) engines in my single spined ZAB frame and engine mount wise its 1 for 1
However, you need ZAB inlets and carbs as they're spaced wider then ones from a later triple spine frame so
I rebuilt mine on ZAB spaced parts
Also, the top rad pipe is on the left on ZABs and central on the Euro/GLs and the thermostat cover is different too
TI lumps in ZAB frames prevent you using ZAB expansion bottles, the later thinner ones are like rocking horse sh*t
Igniton components and wiring are different too, as is the kill switch function
If you have a good understanding of both bikes and the differences it's easy
as you obviously dont (as you had to ask) and are just going by what you think looks nice
it may seem a lot of work so you may want to stick with the Euro
