Originally Posted by DARKSIDE

very good point...and I can see this being addressed...wait for it ,wait for it...answer the phone dude..oh you at work...ok...point taken...

and on the spoiler as such HPI1970 Boss...

For the HPI Mustangs which are not provided with a spoiler:
A lexan spoiler of 16mm total height from trunk deck, and overall chord of 20mm is allowable. All other bodies must use the spoiler included with that specific body set. Built in spoilers may not be enhanced. 17546 - 1970 Ford Mustang Boss 302 (scale wing ok)

and some mod here....if Robk approves it

Body provided deck lid spoilers allowed (not wings). No additional skirts or raised/extended wings or air control surfaces allowed. Body must be trimmed at body trim lines, the front spoiler may be cut from the front panel to the end of the front spoiler ONLY...this is to help with enforment on the body, it is not a performance modification.Full rear bumper required. It is highly preferred that bodies are detailed in race type livery in period-correct paint schemes. Fluorescent colors, wild graphics, chromes and non-period correct paint schemes are frowned upon. All cars must have a number on the hood, both doors and trunk lid. Wheel covers of any type are NOT allowed.
All cars must include a driver figure consisting of at least a head and shoulders.

example below from back in the day...2009 ish