I've got a coolant leak on my '98 Silverado. I believe its leaking from between the intake and the block. I haven't gotten it pressure tested, but thats the only place it can be. I've heard this is relatively common on the 350s. Has anyone ever done this job? Is there any catches, or just helpful little hints? I'm going on monday to pick up the parts, and hopefully by tuesday afternoon the job is done.