Confused 04 JDM legacy twinscroll Turbo difference

vf38 turbo vs td04 The VF 24 starts to come on around 2900 rpm and will significantly improve power through the midrange over the stock TD04 turbo

Is it worth the extra money to go with the STI Turbo over the stock It needs to be replaced any way I know i well also need new injectors and vf38 com Kinugawa Turbo TD04HLL-21H for Subaru BP5 BL5 Legacy Liberty GT Replace VF38 and recondition or replacement depending on availability or the turbo problem