You should definitely pull your wiper linkage out completely. Take apart the wiper pivots, clean and lube them with synthetic grease and then install new boots on them. The pivots are the part that the wiper arm bolts to. On your wipers you should have 2 very distinct speeds. If not the motor needs an overhaul. I do that and can restore your motor to good as new if it's repairable. One thing that causes failure in wiper motors is a low output from the alternator at idle. All z's have a 15-25 amp output at idle on a good day. My high output alternators can produce 60 amps at idle, 125 amps at peak and they are a plug'n'play unit that kicks in at 550 rpm. As far as pulling your wiper motor, it's not that hard to do. After pulling the windshield cowling be sure to squirt some penetrant on the screws that hold the wiper pivots to the body and let them soak for awhile. Try not to break them and when you reinstall, always use anti-sieze on them.
As far as Rock Auto goes, some of their parts are good, and some of their parts are pure garbage. Prices are usually cheaper but not always. Quality should be your first concern, price should be your second concern. I offer special discount pricing to zcar.com users. Just let me know you use this forum whenever you buy something from me and I'll automatically apply a discount. It varies from 5% to 30% depending on the part. As far as a radiator goes, RA sells Spectre rads and they're really low quality. I won't sell them. For a 75 I sell an aluminum 3 row core radiator for 249.95 and I give a 25% discount on that part to zcar.com users which comes to 183.95. I can put together a brake package for you using quality parts and can build the kit anyway that I want. For quotes contact me directly at
[email protected] For braided brake lines, I can't touch the price at MSA. They have some good stuff, some cool stuff, and a few things that aren't the greatest. They do have quite a few things that I can't touch their price, but on some things I can beat their price, and some days I can beat their quality too. I never go the less expensive route if I have to sacrifice quality. How often can you find a place that gives a fair amount of free tech support only to users of this forum, always sells good quality parts, sometimes has the best price, and the only person you deal with there is a Z technician with over 4 decades of working on z's. Sorry about the horn blowing but you all need to know. Z man of Washington