Its so expensiv and there are so many thingz to go rong that its better to spend more and convert to electric.
TBI mite be able to get 100 more horse power at best. Electric may cost 4 timez more, but you can eazily double your horse power and the tork will be beyond the capabilityz uv anything achievable short uv a top fuel dragster setup, wich woud cost at least 4x more than electric.