FJBen
SILVER Star
The 3b has a 21 spline 260mm clutch disc
The 13bt has a 21 spline 275mm clutch disc Some 1HZ is the same.
Some earlier 4bd1t have 21 spline 275mm clutch discs.
Later 4bd1t have the 21 spline 300mm disc.
Do you know which size flywheel you have?
The question would be can you fit the 300mm setup in the 3B H55f bellhousing.
If 300mm
You could use your Isuzu flywheel, 1hd-T pressure plate and npr 21 spline 300mm disc.
If 275, you could use 13bt pressure plate and disc.
You may have to re-drill some holes or dowels , not 100% sure.
The 13bt has a 21 spline 275mm clutch disc Some 1HZ is the same.
Some earlier 4bd1t have 21 spline 275mm clutch discs.
Later 4bd1t have the 21 spline 300mm disc.
Do you know which size flywheel you have?
The question would be can you fit the 300mm setup in the 3B H55f bellhousing.
If 300mm
You could use your Isuzu flywheel, 1hd-T pressure plate and npr 21 spline 300mm disc.
If 275, you could use 13bt pressure plate and disc.
You may have to re-drill some holes or dowels , not 100% sure.