I have the CR-702 unit that i replaced in the 740. It worked well, although i cant be sure about the lighting as the dash lighting on the car rarely worked.
it has;
12 FM presets,
6 MW presets,
6 LW presets,
Casette playback with DNR,
can be linked to the Volvo EQ
but doesnt have TP, or the ability to run a CD unit.
I cut the wires on the back to use them to link in my new CR-906, but i think i could solder to the bits that i have left. Youll see in the photos anyway.
Postage of the new radio to me was £8.96, so any sensible offers, and ill take the damage to the wiring into account.
Richard