[Brian in Tucson]

If Bosch plugs float your boat, you can still find them if you look.

I wouldn't go out of my way, tho. I just installed a set of Autolite iridium plugs in my 01 Boxster base. After the $3 per plug rebate, they cost me 90 cents each. So I'm going to give them a try for 10,000 miles or so.

I've had excellent service from Autolite in the past. Motorcraft too. I had a commercial duty Ford 1 ton van that got 90k out its first set of factory plugs.

I've had Japanese cars (Toyotas) since the mid 70's and have been very happy with Denso plugs and NGK, as well.

Bosch? Nah. Go to Rock auto and look up the plugs for you car. Be sure to claim your 5% discount. The Japanese really have their act together on plugs.