Mopar engine starter

I had bought one for my duster (street car) and it was toast after 6 months bought a mopar performance and its been it there 3 years now and doesn't miss a beat so that's why i asked to see if everyone leans toward the mopar stuff or after market.the duster is only 11-1 comp and the 5.7 headers surround it on the valiant there is a good amount of space around it from the headers,What about a heat blanket is that a good idea or not.(with the new starter) thanks -Steve