Thanks Blaster is a pretty big G1 toy. Much taller than the original Optimus Prime, the seekers, and Soundwave! I guess the scale to original G1 figures were just as wonky as the mass-shifting mechanics of the G1 cartoon.
I realised he was big, just not sure how he stood next to the MPs. When I order him from HTS, he'll be on my MP/Alternator shelf. The cassettes will probably be with my CHUGs.