its a funny site the links dont work sometimes heres how to get there
1. type www.rcdeal.com in you adress bar
2.at the top left of the page click on rc auctions
3.scroll down that page a little further than half way
4.on the left click on the bye bye grp store
they have 4 .28 promos for 285$ and they have 4 sport .21 promos for 215$ a buddy of mine found the store about a month and a half ago ....i had to get one cuz i felt there would be no more ...and they really are a super good engine after its all said and done