440 build for a tow rig/"muscle" truck?

Found another potential option for pistons, Speed Pro L-2266F... anyone have experience with these? Looks like they've been around for a while, used to be branded as TRWs if I understand correctly? Are they still heavy like the L-2355F? They sure look like it lol.

Got a lead on a BB 727 for $200, gonna go check it out tomorrow and if it looks good I'll bring it on home.
Tow rig. Are you gonna be slingin it to 6000 RPM? Weight really is a moot point on what you're doing. I'd get them if you got a good deal. It really won't make much difference.