Convert HP38C to HP34C, is it that simple?

[Marcovecchio]

I would like to have a 34C for a long time, but prices are too high lately. However, I have a financial 38C, in bad physical shape, but working fine. Then I wondered: what is the difference between both models? Can I convert the 38C into a 34C?

While researching, I found the excellent Eric Smith's IC listing for all HP calcs, (http://www.brouhaha.com/~eric/hpcalc/chips/), and it says 38C and 34C use the same processor! My interpretation it that the only difference is the ROM chip!

And, to make things even better, I have a 34C faceplate and a full set of keys, to make it looks exactly like a 34C.

So, my question is: is the ROM chip the only difference?

Thanks!

Eduardo