Modifications & Current State
In order as follows, several modifications have been performed in the last year:
Mobil1 5w-30 Synthetic Oil and AC Delco PF58 High Capacity Filter (PF44 stock)
SLP Performance Skip Shift Eliminator - P/N: 21008
SLP High Flow Air Box Lid - P/N: 21045
K&N High Flow Air Filter, Stock Replacement - SLP P/N: 25012
SLP 85mm Mass Air Meter - P/N: 23062
Lou's Short Stick, shortened stainless handle for factory Hurst Shifter - P/N: 52501-BLK
GMMG Chambered Catalyst back exhaust w/ optional stainless box tips
As such, all mods have totaled up to make for a well rounded (albeit, not complete) package.
To date, best 1/4 mile performance: 13.31 @ 106.9 - with room for improvement!