'72 Demon Sizzler ?s

Hey, guys.. Im new to this forum and wanted to get some advice. I have a 71 demon sizzler. Some minor changes (non-permanent) changes have been made to it (shatty carpet and headliner). I continually go back and forth debating if I want to restore this to its originally sizzler look or convert to 340 car or just make a nice little 360(since I have one ready to put in) with upgraded suspension, etc. Some have said the value of a true 340 demon is more then that of a sizzler, but is a sizzler worth more then a 340 clone? Ill attach a photo of car and fender tag decode. Its a 318 now by the way not /6...\

**** Obviously the Fender Tag didnt show up right, so here are the codes***
G37 M21 B11 V21 V8x V9x Cw3 U A59 C16 C55 G15 Gw3 W6XV TX9 526 329278 E44 D31