You may have blown a shock or worse. Get it checked out.
At 70K, your shocks and springs are pretty weak. Wheelers coils are great and they do lift the front about 2.5". On the down side they are stiff and you will spew grease from your CV boots. (hose clamp mod will cure this)
Another option would be TRD 4WD coils. These will lift the front a bit, give a smooth ride and not effect your CV boots.
I had Wheelers, sold them and went back to OEM coils with HD Bilsteins. These ride great, maybe a little soft. I just aquired a set of TRD coils.
Good luck
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Old T100 items for sale
Thunder Gray Metallic
2002 REGULAR CAB - LONG BED - 4WD - V8 - SR5

TRD / Kazuma LSD made by EATON
Bilstein HD shocks
Michelin 8 ply E series radials
JBA headers
Hellwig rear bar
Line-X over the rail
2005 tail lights
OEM Door Sill protectors
TRD Off-Road front coil springs
Color matched LEER Hi-Top cap
Wet Okole Sport Seat Covers
Tinted Windows
OEM Rubber Bed Mat
OEM All-Weather mats
OEM Towing Package with Remote Transmission Cooler
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