because its getting close to time to get a new buggy engine. im currently running a JPX in my buggy that has 8+ gallons on it. and i got rid of my green head Alpha because i was only running truggy so all i needed was my orange head Alpha but i recently started running buggy some again so i need a new engine so why not try the new OS engines? i had the old version vspec and i liked it pretty good but it never ran quite right (got it used though). but ive ran alot of others OS and i liked them in buggy because they were mellow (to me)