OK so i am in this deep..rad out, alt out, power steering pump that leaked out, and the engine has just under 200K, i am building this van to make a run to the tip of south america and back to western Oregon without ANY problems...so the ? is..where to stop. should i go in past the timing seal and remove the cover to replace the gears & chain..actually seems like the smart thing to do while i have it this far apart..what would you do???? just curious...