Official page for Spin Out is here:
https://tf.takaratomy.co.jp/products...f_mp/mp-39plus

Yeah, the belief is that the shoulder rockets on Sunstreaker's shoulders were meant to be the rocket pack for Sideswipe, and that the huge piston like arms on Sunstreaker were meant to be Sideswipe's piledriver arms. Huh, in that sense I guess you could head canon Spin-Out as an alternate universe Sideswipe.