Not sure if its been covered or mentioned but
DSS offers ready spec driveshafts for IS300 with R154 conversions, not sure if its compatible only to MK3 R154 type trans.
Part #'s for the DS alum TOSH12 and Steel TOSH12-S
My Q is if these DS would work regardless of R154 type trans ie ( MK3 or Chaser/Soarer ), the main differences are internal synchros and the remote shifter assy.
Side by side comparison from the bellhousing to output shaft on either look to be same length, what makes the Chaser/Soarer R154 longer is the shifter assy.
Any feedback on this would help a ton, I have all my things ready to swap. Would like to know if i can order up the TOSH12-S and have as little downtime waiting to complete my swap hopefully without measuring.