https://www.classic-ford.org/mr2/mr2play/tm.aspx?m=110612(c) MR2 AUSTRALIA301 inch is 1 inch so will behave the same as the 4Runner and Supra 1 inch upgrades.&nbsp;<br/>&nbsp;<br/>Booster will obviously be totally different, but if it requires adapting i would rather just use the latest GEN3 item you can find (4 updates to the GEN3 booster over the years)<br/>https://www.classic-ford.org/mr2/mr2play/FindPost/110635Wed, 25 Jun 2014 20:22:03 GMTHi all<br>Stripped out a avalon for the 1mz recently. Noticed that the master from the Avalon has a&quot;1&quot; on it aswell as a very large booster. I am upgrading to late model brakes soon and was wondering if anyone has run an Avalon master in their carhttps://www.classic-ford.org/mr2/mr2play/FindPost/110612Wed, 25 Jun 2014 13:27:58 GMT