You can buy and aftermarket oil filter mount to use with the 350 block and it will be just as if there was never an oil cooler on it.
Your local parts store may have it in stock, or can get it easy enough. You will put the filter on just as you would any other 350.
The injection system is not that complicated to use if you have the whole car for the siring harness and computer. There are aftermarket computers and wiring harnesses that would allow you to keep the fuel injection in place.
But set up correctly, the carb will serve you fine.
