Non-SVT & non-returnless LIM's are the smallest of the 3 sizes.
Largest are late 99, 00, and returnless LIM's - Rated at 34mm/35mm actual size is 33.5mm/34.7mm
1st SVT LIM (98, 98.5, early 99) - Rated at 31mm/32mm - actual size 30.7mm/31.8mm
Stock LIM - No rating - measured at ~29mm/~30mm
For reference the 99/00 DH UIM meaures in at:
Primary: 30.5mm
Secondary: 31.8mm
TB Inlet: 66.3mm
The 00 SVT Cylinder Head Inlet Ports (99 & 00 had more EHing done to the head ports - 98/98.5 smaller yet - stock just TINY!)
Primary: 33mm
Secondary: 34mm
