Losi XXL gearing:

the output gears in the xxl tranmisssion have a 29/16 ratio
2nd gear xxl foc: 22/23*29/16 = 1,894886364
2nd gear xxl foc & swap mod: 23/22*29/16 = 1,733695652

so swapping to xxl output gears in the lst2/afershock tranny(1,89) gives almost the same reduction as the gear swap mod in the lst2 tranny(1,91)