Absolutely correct Oscarito, your turn.
To add some more information, the story behind was this:
Developed from the La-7, the La-126 added new laminar-flow wings, a new all metal stressed skin fuselage, new canopy, better armament and many other changes.
The follow-on development of the La-126, the La-130, was the basis for the La-9.
One La-126 was equipped with 2xPVRD-430 subsonic ramjet engines to become the La-126PVRD and one La-130 was equipped with 2xPVRD-450 to become the La-138, both with a boost in top speed of more than 100 km/h being obtained however at the expense of high fuel consumption and severe drag when the engines were not in use.
Best regards - Mike