new svx purchase

hello folks,

My friend's acquaintance is offering him a 92 svx w/ 130k miles

problem is it shifts 1-2, skips 3 and goes to 4 when rpm's climb high enough from 2nd.

should i buy this car? is this a solenoid issue or clutch pack issue?

is this car reliable? are parts pricey?

also,... battery is dead,... we tried boosting it with a new battery and while the other car is running, cranking the subaru causes the running car's lights to dim, and the subaru just clicks. The car supplying the power is a big mercedes with a large battery so it should have enough cranking power, is there a trick to boost starting this car?

thanks in advance