LA 318 advice

Since we’ve went off the rails a few times here… I didn’t ask exactly how worn out the 318 is, but hows about this with a 48/65 (26%underdrive) pulley setup look to you. I really was wanting to pull the trigger on one during the Black Friday sale…
Chrysler Mopar SB 318 360 LA Complete 6-71 Roots Supercharger Blower Kit