I am doing a complete rebuild on a 94 Land Cruiser 80 series as a first time project. I would like to eliminate the cats, egr and pair reed valve systems and move the O2 sensors up to the exhaust manifold. The muffler is rusting out and the cats I would like to remove so I have room to install a heater hose setup for the rear heater system. I see Manta has a bolt on exhaust kit for a 94 but pricey. Other than going to a muffler shop what other options can you recommend? I read a few older threads on the topic but was curious if I missed options in my online search. Thank you for your feedback.