I had this problem, with my Supra - ended up keeping the stock steering wheel. We toyed round with the idea of putting buttons on a jza70r momo wheel (no officer, it's not for NOS, it's for cruise!) but you had to change over the boss as well and it was all too much f**king around.
You could try mounting the switches elsehwere (on the dash for example) also if you want to keep the cruise.