You cannot convert an automatic transmission to a manual one, but you can replace the automatic with a manual. It is a big job and if you do not do it your self would probably cost a lot more than Is the IS300 with a manual transmission a BMW 3 Series clone? Mechanically, it's very, very close. Separated at birth is more like it. The Lexus shifts sharply, turns acutely, handles creamily and Find great deals on eBay for is300 transmission. Shop with confidence. Skip to main content. eBay Logo: Complete Manual Transmissions for Lexus IS300. Automatic Transmission Parts for Lexus IS300. Feedback. Leave feedback about your eBay search experience - opens in new window or tab Full bolt in 6-speed (T56 Magnum) swap kit for the Lexus IS300. You can choose the transmission of choice GR700, GR900, or GR1000. This kit includes a brand new Tremec T56 Magnum built to spec, Quicktime SFI Steel bell housing, billet shifter relocation, and chromoly transmission mount. as stated above, they never came with a manual trans from the factory, at least for the 2nd gen model. however, from reading all the japanese car mags and trolling the japanese car sites, i've seen the 2jz twin turbo aristos overseas being converted to 6spd using supra components ie. pedal box, ecu, trans, etc. it may be possible to convert a gs300 here to 6spd since it shares the same IS300. Selling. 2002. L6-3.0L. Is the 2002 Lexus is300 with manual transmission a good car and why? Get an instant quote for your car Our certified mechanics come to you ?Backed by 12-month, 12,000-mile guarantee?Fair and transparent pricing 1-24 of 111 results for "Lexus Is300 Manual Transmission" Skip to main search results Amazon Prime. Eligible for Free Shipping. ICBEAMER JDM Racing Style Manual Transmission Stick Shift Knob Aluminum Silver with Red LED Light [Battery Included] 5.0 out of 5 stars 1. $15.99 $ 15. 99. Looking for a Lexus IS300 Transmission & Drivetrain replacement? Shop Advance Auto Parts online