When I did this the alignment tool came with the kit.

I would get a couple more jack stands. You will need a mimimum 12" extension to reach the top transmission mounting bolt. There are two alignment pins that require coercion to get the transmission separated from the engine. If the '89 has it I would definitely replace the crank position sensor. If the plastic is damaged on the clutch cable, get a new one there, also. I did not do the rear oil seal on the 240, but did replace it on my V70 when I did its clutch last year since it was at 320k.

I disconnected teh drive shaft and removed the exhaust system, then lowered the back of the engine until it was resting on the firewall. This gave pretty good access to the difficult bolts and the CPS. To remove (and install) the transmission you need to pull it back, then rotate it so the starter hump clears the firewall. I used a transmission jack and thought it was more in the way.

Overall not a real hard job, especially compared to the V70.