Hello pexi!
Unfortunately most of the Scythe staff is at CeBit trade show at the moment. I think they'll reply as soon as they are back.
Basically it should be possible to install your Ninja Rev. A on a Socket 775 if you kept all your accessoire parts.
Info concerning installation on Socket 775:
ftp://ftp.scythe-eu.com/Manuals/CPU%...U%20Cooler.pdf
The Ninja Rev. A is quite similar to the Rev. B with the additional Retention Kit. This means that backplate, rails and Socket 478 brackets are used to mount the cooler an Socket 775 boards.
Looking at the pictures of Abit IP35 Pro I believe it should be compatible. Those chipset coolers around the CPU socket seem quite high - that's something you'd have to test. You could also measure those cooler's height an compare it to Ninja's dimensions found in this thread:
http://www.scythe-eu.com/forum/ninja...imensions.html
First of the aluminium fins begins at 37-39mm height. So if your chipset coolers are lower than that the cooler should clear them.
For an official answer you'll have to wait I'm afraid.
Bye Oliver