Can I Use A Universal Catalytic Converter Of My S10

My 1996 s10 has the 4.3, and the catalytic converter is going out and im looking to get it replaced. I have found a magnaflow catalytic converter that is universal. it says that i need to cut mine off and weld the new one in place. i was wondering if any chevy mechanic knew if this would would be fine, and it would not throw a code.
thanks for any info yall