I was planning on buying the 60hp spark, tune it to 110 and put a stage 3 kit on it but the guy at the dealership said the fuel pump, injectors and many other mechanical things around the engine are undersized on the 60hp and won't tune up to 110. I'm pretty sure it's BS. After reviewing part lists, they are all the same for 2021 Sparks. I might also look for a used IBR to add it and the VTS later on. Might try and fit the VTS without an IBR too. I only have experience on 90s skis. Any thoughts on that plan ?