Car mod error: E109 (called the contender in GTA IV)

[CIK7]

I need someone familiar with car modding for the EFLC. I'm trying to replace the E109 currently. A lot have not heard of the E109 pickup truck because R* chose to change the name from Contender in GTA IV to E109 in EFLC. It's the contender. Anyway there is NO handling line for the Contender/E109 in the handling script and adding it doesn't make it work. My issue: the E109 POOPS all over my game while I'm playing. Changing the E109 makes me lose proper texture loading, touching the vehicle either throws me or itself across the map, EASILY blows up with slightest tap, and the wheels will disappear and vehicle bugs down through the map. Please help! If need be I will reinstall the vehicle and leave it alone.