Transformers Henkei/Classic, Optimus Prime combined with Jetfire??

I saw this combine mode on web someday, I want to try it myself.

It is not really combined actually, only make some minor transformations, and just put Jetfire on Prime shoulders.

Not 100% works, but looks nice, lol.

JET PRIME? PRIMEFIRE??

This is what you need for combining.

Transform in to this mode.

Side view of the combining is weird...
(some of the area may not fit)

Back. (looks good)

Heavy artillery bot.