Right, unless it's not as old as you think or it's a Zephyr/C-5 you've got me confused there.
Timeline for the Grinds went like this.
2001 the Grind is launched. Assembled in the USA, the 4 string is an active 34" scale PJ with a bolt on neck/ 5 string is 35" scale bolt on with active JJ pickups.
2002 saw the BXP versions arrive, again 34" active bolt on PJ 4 string/ 35" active bolt on JJ.
Late 2003 all 4 models are discontinued.
2004 the Grind BXP NTB comes out of Vietnam, 4 & 5 string models are 35" scale passive basses with soapbars. Few years later production moves to China, briefly, then Indonesia.
In order of appearance.
US Grind 5
BXP Grind 4
Grind BXP NTB Vietnam
Scooped out area at lower horn had disappeared by 2008 Indonesian builds.