yeah you could use an intermediate plate in between, put two sets of holes. one for original screws, one set for the plate
then youd have the safety of not messing up the front bar lol
plus, you can always go back to it later.
your best bet is probably to get a mate whos good with cars to have a look over yours
dead turbo wheel? possibly too much boost/poor tuning
possibly not a good idea to drive it until you know what exactly is wrong with it
to change gear oil:
get it up in the air,
whip out the two plugs that a half inch fits into,
let oil drain out,
replace bottom plug,
fill with oil until it starts coming out of top plug hole
replace plug
easy!
removing a steering wheel that has an airbag for a wheel that has no airbag is illegal
i would recommend getting someone who knows what they are doing to change it if you must have an aftermarket wheel